I would like to start off by saying, This method does not 100% imitate CEL Shading and results are not as good as inverse-sizing a mesh (in my opinion),
I haven’t seen anyone do something like this yet and I was recommended to open source this so here i am:
These are meshes overlayed with a duplicate that has the material and color as black forcefield,
This takes advantage of the forcefield’s “outline property”.
INSTRUCTIONS
Firstly, Get a mesh, Have two copies of it (in the same position)
Secondly, Chose one of the copies (Copy1), resize it from the center making the mesh slightly larger than the other (Copy2), as a result covering the other mesh,
Lastly, set the material and color to black forcefield.
Following the steps should give you the result shown above, i’ve just tested it again and it still works so it should still work, make sure you haven’t missed any steps